While they are rather close to the original source material's comic book roots (with the collective Avengers in typical "Avengers Assemble" pose), we can confirmed from the promotional images that Jeremy Renner's Hawkeye is pretty much getting the Ultimate Hawkeye treatment with the shades and all while the cinematic Iron Man has seemingly reverted to his Mark IV armor (or a rumored Mark VII) with the circle-shaped chestplate protecting the arc reactor.

Hit the jump to check out these cool promotional art (click to view in hi-res).

Directed by Joss Whedon, The Avengers stars Robert Downey Jr., Chris Hemsworth, Chris Evans, Mark Ruffalo, Jeremy Renner, Scarlett Johansson, Samuel L. Jackson, Tom Hiddleston and Cobie Smulders. The film is currently scheduled to be released in 3D on May 4th, 2012.